the suspect, paul ciancia is in critical condition. he suffered wounds to the legs and head making it difficult for investigators to get information from him. abc news reporter has more from los angeles. >> lax is returning to normal. >> the question remains. why did he do it? police say 23-year-old paul ciancia brought a rifle and 100 rounds of ammunition to los angeles airport. this tmz video shows frantic passengers freeing terminal 3. they say he pulled the rifle from his back and opened fire at a security check point. one officer was killed and two others wounded. >> one guy. a single man with a gun demonstrated the worst of human nature. >> those who could ran. others huddled in the bathroom stalls. >> i was scared that maybe he was going to come towards me and my husband. >> police stepped in, shooting him four times before taking him into custody. law enforcement sources said he carried a note expressing anger and frustration at the tsa. the slain officer, 39-year-old gerardo hernandez is the first in tsa history to die in the